Agate
A cut and polished section of blue agate from Idar-Oberstein, Germany. Agate (silicon dioxide) is a cryptocrystalline quartz
Picture No
10711162
Media ID
47584967
Size
3548px x 3440px
(4.5MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
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Agate Chalcedony Cryptocrystalline Dioxide Mineral Polished Quartz Silicate Silicon Swirl Tectosilicate
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